From: Nicolas Ferre <nicolas.ferre@atmel.com>
To: plagnioj@jcrosoft.com, linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Subject: [PATCH 13/18] ARM: at91/rtc-at91sam9: pass the GPBR to use via ressources
Date: Fri, 17 Feb 2012 18:50:05 +0100 [thread overview]
Message-ID: <8187feb330895bf9e077ede21e68cc81a72438cc.1329500622.git.nicolas.ferre@atmel.com> (raw)
In-Reply-To: <1329501010-30468-1-git-send-email-nicolas.ferre@atmel.com>
In-Reply-To: <0d78171672a30e8ec8084f54a557e9948260356d.1329500622.git.nicolas.ferre@atmel.com>
From: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
The GPBR registers are used for storing RTC values. The GPBR registers
to use are now provided using standard resource entry. The array is
filled in SoC specific code.
rtc-at91sam9 RTT as RTC driver is modified to retrieve this information.
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
---
arch/arm/mach-at91/at91sam9260_devices.c | 10 +++++++-
arch/arm/mach-at91/at91sam9261_devices.c | 8 ++++++-
arch/arm/mach-at91/at91sam9263_devices.c | 16 +++++++++++--
arch/arm/mach-at91/at91sam9g45_devices.c | 8 ++++++-
arch/arm/mach-at91/at91sam9rl_devices.c | 8 ++++++-
arch/arm/mach-at91/include/mach/at91sam9260.h | 5 +--
arch/arm/mach-at91/include/mach/at91sam9261.h | 5 +--
arch/arm/mach-at91/include/mach/at91sam9263.h | 5 +--
arch/arm/mach-at91/include/mach/at91sam9g45.h | 5 +--
arch/arm/mach-at91/include/mach/at91sam9rl.h | 2 +-
drivers/rtc/rtc-at91sam9.c | 29 +++++++++++++++++++++---
11 files changed, 76 insertions(+), 25 deletions(-)
diff --git a/arch/arm/mach-at91/at91sam9260_devices.c b/arch/arm/mach-at91/at91sam9260_devices.c
index 2071017..ae2b648 100644
--- a/arch/arm/mach-at91/at91sam9260_devices.c
+++ b/arch/arm/mach-at91/at91sam9260_devices.c
@@ -718,14 +718,16 @@ static struct resource rtt_resources[] = {
.start = AT91SAM9260_BASE_RTT,
.end = AT91SAM9260_BASE_RTT + SZ_16 - 1,
.flags = IORESOURCE_MEM,
- }
+ }, {
+ .flags = IORESOURCE_MEM,
+ },
};
static struct platform_device at91sam9260_rtt_device = {
.name = "at91_rtt",
.id = 0,
.resource = rtt_resources,
- .num_resources = ARRAY_SIZE(rtt_resources),
+ .num_resources = 1,
};
@@ -733,6 +735,10 @@ static struct platform_device at91sam9260_rtt_device = {
static void __init at91_add_device_rtt_rtc(void)
{
at91sam9260_rtt_device.name = "rtc-at91sam9";
+ at91sam9260_rtt_device.num_resources++;
+ rtt_resources[1].start = AT91SAM9260_BASE_GPBR +
+ 4 * CONFIG_RTC_DRV_AT91SAM9_GPBR;
+ rtt_resources[1].end = rtt_resources[1].start + 3;
}
#else
static void __init at91_add_device_rtt_rtc(void) {}
diff --git a/arch/arm/mach-at91/at91sam9261_devices.c b/arch/arm/mach-at91/at91sam9261_devices.c
index b3ceb97..57dca50 100644
--- a/arch/arm/mach-at91/at91sam9261_devices.c
+++ b/arch/arm/mach-at91/at91sam9261_devices.c
@@ -604,6 +604,8 @@ static struct resource rtt_resources[] = {
.start = AT91SAM9261_BASE_RTT,
.end = AT91SAM9261_BASE_RTT + SZ_16 - 1,
.flags = IORESOURCE_MEM,
+ }, {
+ .flags = IORESOURCE_MEM,
}
};
@@ -611,13 +613,17 @@ static struct platform_device at91sam9261_rtt_device = {
.name = "at91_rtt",
.id = 0,
.resource = rtt_resources,
- .num_resources = ARRAY_SIZE(rtt_resources),
+ .num_resources = 1,
};
#if IS_ENABLED(CONFIG_RTC_DRV_AT91SAM9)
static void __init at91_add_device_rtt_rtc(void)
{
at91sam9261_rtt_device.name = "rtc-at91sam9";
+ at91sam9261_rtt_device.num_resources++;
+ rtt_resources[1].start = AT91SAM9261_BASE_GPBR +
+ 4 * CONFIG_RTC_DRV_AT91SAM9_GPBR;
+ rtt_resources[1].end = rtt_resources[1].start + 3;
}
#else
static void __init at91_add_device_rtt_rtc(void) {}
diff --git a/arch/arm/mach-at91/at91sam9263_devices.c b/arch/arm/mach-at91/at91sam9263_devices.c
index b4a6adb..d042f91 100644
--- a/arch/arm/mach-at91/at91sam9263_devices.c
+++ b/arch/arm/mach-at91/at91sam9263_devices.c
@@ -967,6 +967,8 @@ static struct resource rtt0_resources[] = {
.start = AT91SAM9263_BASE_RTT0,
.end = AT91SAM9263_BASE_RTT0 + SZ_16 - 1,
.flags = IORESOURCE_MEM,
+ }, {
+ .flags = IORESOURCE_MEM,
}
};
@@ -974,7 +976,7 @@ static struct platform_device at91sam9263_rtt0_device = {
.name = "at91_rtt",
.id = 0,
.resource = rtt0_resources,
- .num_resources = ARRAY_SIZE(rtt0_resources),
+ .num_resources = 1,
};
static struct resource rtt1_resources[] = {
@@ -982,6 +984,8 @@ static struct resource rtt1_resources[] = {
.start = AT91SAM9263_BASE_RTT1,
.end = AT91SAM9263_BASE_RTT1 + SZ_16 - 1,
.flags = IORESOURCE_MEM,
+ }, {
+ .flags = IORESOURCE_MEM,
}
};
@@ -989,28 +993,34 @@ static struct platform_device at91sam9263_rtt1_device = {
.name = "at91_rtt",
.id = 1,
.resource = rtt1_resources,
- .num_resources = ARRAY_SIZE(rtt1_resources),
+ .num_resources = 1,
};
#if IS_ENABLED(CONFIG_RTC_DRV_AT91SAM9)
static void __init at91_add_device_rtt_rtc(void)
{
struct platform_device *pdev;
+ struct resource *r;
switch (CONFIG_RTC_DRV_AT91SAM9_RTT) {
case 0:
pdev = &at91sam9263_rtt0_device;
+ r = rtt0_resources;
break;
case 1:
pdev = &at91sam9263_rtt1_device;
+ r = rtt1_resources;
break;
default:
pr_err("at91sam9263: support only 2 RTT (%d)\n",
- CONFIG_RTC_DRV_AT91SAM9_RTT);
+ CONFIG_RTC_DRV_AT91SAM9_RTT);
return;
}
+ r[1].start = AT91SAM9263_BASE_GPBR + 4 * CONFIG_RTC_DRV_AT91SAM9_GPBR;
+ r[1].end = r[1].start + 3;
pdev->name = "rtc-at91sam9";
+ pdev->num_resources++;
}
#else
static void __init at91_add_device_rtt_rtc(void) {}
diff --git a/arch/arm/mach-at91/at91sam9g45_devices.c b/arch/arm/mach-at91/at91sam9g45_devices.c
index 81d1adf..d184ae4 100644
--- a/arch/arm/mach-at91/at91sam9g45_devices.c
+++ b/arch/arm/mach-at91/at91sam9g45_devices.c
@@ -1194,6 +1194,8 @@ static struct resource rtt_resources[] = {
.start = AT91SAM9G45_BASE_RTT,
.end = AT91SAM9G45_BASE_RTT + SZ_16 - 1,
.flags = IORESOURCE_MEM,
+ }, {
+ .flags = IORESOURCE_MEM,
}
};
@@ -1201,13 +1203,17 @@ static struct platform_device at91sam9g45_rtt_device = {
.name = "at91_rtt",
.id = 0,
.resource = rtt_resources,
- .num_resources = ARRAY_SIZE(rtt_resources),
+ .num_resources = 1,
};
#if IS_ENABLED(CONFIG_RTC_DRV_AT91SAM9)
static void __init at91_add_device_rtt_rtc(void)
{
at91sam9g45_rtt_device.name = "rtc-at91sam9";
+ at91sam9g45_rtt_device.num_resources++;
+ rtt_resources[1].start = AT91SAM9G45_BASE_GPBR +
+ 4 * CONFIG_RTC_DRV_AT91SAM9_GPBR;
+ rtt_resources[1].end = rtt_resources[1].start + 3;
}
#else
static void __init at91_add_device_rtt_rtc(void) {}
diff --git a/arch/arm/mach-at91/at91sam9rl_devices.c b/arch/arm/mach-at91/at91sam9rl_devices.c
index dd248c8..285dc6b 100644
--- a/arch/arm/mach-at91/at91sam9rl_devices.c
+++ b/arch/arm/mach-at91/at91sam9rl_devices.c
@@ -683,6 +683,8 @@ static struct resource rtt_resources[] = {
.start = AT91SAM9RL_BASE_RTT,
.end = AT91SAM9RL_BASE_RTT + SZ_16 - 1,
.flags = IORESOURCE_MEM,
+ }, {
+ .flags = IORESOURCE_MEM,
}
};
@@ -690,13 +692,17 @@ static struct platform_device at91sam9rl_rtt_device = {
.name = "at91_rtt",
.id = 0,
.resource = rtt_resources,
- .num_resources = ARRAY_SIZE(rtt_resources),
+ .num_resources = 1,
};
#if IS_ENABLED(CONFIG_RTC_DRV_AT91SAM9)
static void __init at91_add_device_rtt_rtc(void)
{
at91sam9rl_rtt_device.name = "rtc-at91sam9";
+ at91sam9rl_rtt_device.num_resources++;
+ rtt_resources[1].start = AT91SAM9RL_BASE_GPBR +
+ 4 * CONFIG_RTC_DRV_AT91SAM9_GPBR;
+ rtt_resources[1].end = rtt_resources[1].start + 3;
}
#else
static void __init at91_add_device_rtt_rtc(void) {}
diff --git a/arch/arm/mach-at91/include/mach/at91sam9260.h b/arch/arm/mach-at91/include/mach/at91sam9260.h
index 1524e87..2e47b6d 100644
--- a/arch/arm/mach-at91/include/mach/at91sam9260.h
+++ b/arch/arm/mach-at91/include/mach/at91sam9260.h
@@ -78,10 +78,8 @@
#define AT91SAM9260_BASE_ADC 0xfffe0000
/*
- * System Peripherals (offset from AT91_BASE_SYS)
+ * System Peripherals
*/
-#define AT91_GPBR (0xfffffd50 - AT91_BASE_SYS)
-
#define AT91SAM9260_BASE_ECC 0xffffe800
#define AT91SAM9260_BASE_SDRAMC 0xffffea00
#define AT91SAM9260_BASE_SMC 0xffffec00
@@ -95,6 +93,7 @@
#define AT91SAM9260_BASE_RTT 0xfffffd20
#define AT91SAM9260_BASE_PIT 0xfffffd30
#define AT91SAM9260_BASE_WDT 0xfffffd40
+#define AT91SAM9260_BASE_GPBR 0xfffffd50
#define AT91_USART0 AT91SAM9260_BASE_US0
#define AT91_USART1 AT91SAM9260_BASE_US1
diff --git a/arch/arm/mach-at91/include/mach/at91sam9261.h b/arch/arm/mach-at91/include/mach/at91sam9261.h
index a6a3c1d..44fbdc1 100644
--- a/arch/arm/mach-at91/include/mach/at91sam9261.h
+++ b/arch/arm/mach-at91/include/mach/at91sam9261.h
@@ -63,10 +63,8 @@
/*
- * System Peripherals (offset from AT91_BASE_SYS)
+ * System Peripherals
*/
-#define AT91_GPBR (0xfffffd50 - AT91_BASE_SYS)
-
#define AT91SAM9261_BASE_SMC 0xffffec00
#define AT91SAM9261_BASE_MATRIX 0xffffee00
#define AT91SAM9261_BASE_SDRAMC 0xffffea00
@@ -79,6 +77,7 @@
#define AT91SAM9261_BASE_RTT 0xfffffd20
#define AT91SAM9261_BASE_PIT 0xfffffd30
#define AT91SAM9261_BASE_WDT 0xfffffd40
+#define AT91SAM9261_BASE_GPBR 0xfffffd50
#define AT91_USART0 AT91SAM9261_BASE_US0
#define AT91_USART1 AT91SAM9261_BASE_US1
diff --git a/arch/arm/mach-at91/include/mach/at91sam9263.h b/arch/arm/mach-at91/include/mach/at91sam9263.h
index dda083d..d96cbb2 100644
--- a/arch/arm/mach-at91/include/mach/at91sam9263.h
+++ b/arch/arm/mach-at91/include/mach/at91sam9263.h
@@ -72,10 +72,8 @@
#define AT91SAM9263_BASE_2DGE 0xfffc8000
/*
- * System Peripherals (offset from AT91_BASE_SYS)
+ * System Peripherals
*/
-#define AT91_GPBR (0xfffffd60 - AT91_BASE_SYS)
-
#define AT91SAM9263_BASE_ECC0 0xffffe000
#define AT91SAM9263_BASE_SDRAMC0 0xffffe200
#define AT91SAM9263_BASE_SMC0 0xffffe400
@@ -95,6 +93,7 @@
#define AT91SAM9263_BASE_PIT 0xfffffd30
#define AT91SAM9263_BASE_WDT 0xfffffd40
#define AT91SAM9263_BASE_RTT1 0xfffffd50
+#define AT91SAM9263_BASE_GPBR 0xfffffd60
#define AT91_USART0 AT91SAM9263_BASE_US0
#define AT91_USART1 AT91SAM9263_BASE_US1
diff --git a/arch/arm/mach-at91/include/mach/at91sam9g45.h b/arch/arm/mach-at91/include/mach/at91sam9g45.h
index a824e15..d052abc 100644
--- a/arch/arm/mach-at91/include/mach/at91sam9g45.h
+++ b/arch/arm/mach-at91/include/mach/at91sam9g45.h
@@ -84,10 +84,8 @@
#define AT91SAM9G45_BASE_TC5 0xfffd4080
/*
- * System Peripherals (offset from AT91_BASE_SYS)
+ * System Peripherals
*/
-#define AT91_GPBR (0xfffffd60 - AT91_BASE_SYS)
-
#define AT91SAM9G45_BASE_ECC 0xffffe200
#define AT91SAM9G45_BASE_DDRSDRC1 0xffffe400
#define AT91SAM9G45_BASE_DDRSDRC0 0xffffe600
@@ -106,6 +104,7 @@
#define AT91SAM9G45_BASE_PIT 0xfffffd30
#define AT91SAM9G45_BASE_WDT 0xfffffd40
#define AT91SAM9G45_BASE_RTC 0xfffffdb0
+#define AT91SAM9G45_BASE_GPBR 0xfffffd60
#define AT91_USART0 AT91SAM9G45_BASE_US0
#define AT91_USART1 AT91SAM9G45_BASE_US1
diff --git a/arch/arm/mach-at91/include/mach/at91sam9rl.h b/arch/arm/mach-at91/include/mach/at91sam9rl.h
index 2d7176a..e0073eb 100644
--- a/arch/arm/mach-at91/include/mach/at91sam9rl.h
+++ b/arch/arm/mach-at91/include/mach/at91sam9rl.h
@@ -70,7 +70,6 @@
* System Peripherals (offset from AT91_BASE_SYS)
*/
#define AT91_SCKCR (0xfffffd50 - AT91_BASE_SYS)
-#define AT91_GPBR (0xfffffd60 - AT91_BASE_SYS)
#define AT91SAM9RL_BASE_DMA 0xffffe600
#define AT91SAM9RL_BASE_ECC 0xffffe800
@@ -87,6 +86,7 @@
#define AT91SAM9RL_BASE_RTT 0xfffffd20
#define AT91SAM9RL_BASE_PIT 0xfffffd30
#define AT91SAM9RL_BASE_WDT 0xfffffd40
+#define AT91SAM9RL_BASE_GPBR 0xfffffd60
#define AT91SAM9RL_BASE_RTC 0xfffffe00
#define AT91_USART0 AT91SAM9RL_BASE_US0
diff --git a/drivers/rtc/rtc-at91sam9.c b/drivers/rtc/rtc-at91sam9.c
index 08b69fd..d49feff 100644
--- a/drivers/rtc/rtc-at91sam9.c
+++ b/drivers/rtc/rtc-at91sam9.c
@@ -57,6 +57,7 @@ struct sam9_rtc {
void __iomem *rtt;
struct rtc_device *rtcdev;
u32 imr;
+ void __iomem *gpbr;
};
#define rtt_readl(rtc, field) \
@@ -65,9 +66,9 @@ struct sam9_rtc {
__raw_writel((val), (rtc)->rtt + AT91_RTT_ ## field)
#define gpbr_readl(rtc) \
- at91_sys_read(AT91_GPBR + 4 * CONFIG_RTC_DRV_AT91SAM9_GPBR)
+ __raw_readl((rtc)->gpbr)
#define gpbr_writel(rtc, val) \
- at91_sys_write(AT91_GPBR + 4 * CONFIG_RTC_DRV_AT91SAM9_GPBR, (val))
+ __raw_writel((val), (rtc)->gpbr)
/*
* Read current time and date in RTC
@@ -289,14 +290,17 @@ static const struct rtc_class_ops at91_rtc_ops = {
*/
static int __devinit at91_rtc_probe(struct platform_device *pdev)
{
- struct resource *r;
+ struct resource *r, *r_gpbr;
struct sam9_rtc *rtc;
int ret;
u32 mr;
r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!r)
+ r_gpbr = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+ if (!r || !r_gpbr) {
+ dev_err(&pdev->dev, "need 2 ressources\n");
return -ENODEV;
+ }
rtc = kzalloc(sizeof *rtc, GFP_KERNEL);
if (!rtc)
@@ -314,6 +318,20 @@ static int __devinit at91_rtc_probe(struct platform_device *pdev)
goto fail;
}
+ rtc->rtt = ioremap(r->start, resource_size(r));
+ if (!rtc->rtt) {
+ dev_err(&pdev->dev, "failed to map registers, aborting.\n");
+ ret = -ENOMEM;
+ goto fail;
+ }
+
+ rtc->gpbr = ioremap(r_gpbr->start, resource_size(r_gpbr));
+ if (!rtc->gpbr) {
+ dev_err(&pdev->dev, "failed to map gpbr registers, aborting.\n");
+ ret = -ENOMEM;
+ goto fail_gpbr;
+ }
+
mr = rtt_readl(rtc, MR);
/* unless RTT is counting at 1 Hz, re-initialize it */
@@ -356,6 +374,8 @@ static int __devinit at91_rtc_probe(struct platform_device *pdev)
return 0;
fail_register:
+ iounmap(rtc->gpbr);
+fail_gpbr:
iounmap(rtc->rtt);
fail:
platform_set_drvdata(pdev, NULL);
@@ -377,6 +397,7 @@ static int __devexit at91_rtc_remove(struct platform_device *pdev)
rtc_device_unregister(rtc->rtcdev);
+ iounmap(rtc->gpbr);
iounmap(rtc->rtt);
platform_set_drvdata(pdev, NULL);
kfree(rtc);
--
1.7.9
next prev parent reply other threads:[~2012-02-17 17:52 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-17 17:49 [PATCH 00/18] at91 first cleanup series for 3.4 Nicolas Ferre
2012-02-17 17:49 ` [PATCH 01/18] ARM: at91: factorise duplicated at91sam9 idle Nicolas Ferre
2012-02-17 17:49 ` [PATCH 02/18] ARM: at91/at91x40: remove use of at91_sys_read/write Nicolas Ferre
2012-02-17 17:49 ` [PATCH 03/18] ARM: at91: make matrix register base soc independent Nicolas Ferre
2012-02-17 17:49 ` [PATCH 04/18] ARM: at91: make ST (System Timer) " Nicolas Ferre
2012-02-20 0:22 ` Ryan Mallon
2012-02-20 1:38 ` Jean-Christophe PLAGNIOL-VILLARD
2012-02-20 1:52 ` Ryan Mallon
2012-02-20 3:02 ` Jean-Christophe PLAGNIOL-VILLARD
2012-02-20 3:16 ` Ryan Mallon
2012-02-20 3:23 ` Jean-Christophe PLAGNIOL-VILLARD
2012-02-20 3:48 ` Ryan Mallon
2012-02-20 3:49 ` Jean-Christophe PLAGNIOL-VILLARD
2012-02-20 7:33 ` Russell King - ARM Linux
2012-02-20 9:18 ` Jean-Christophe PLAGNIOL-VILLARD
2012-02-17 17:49 ` [PATCH 05/18] ARM: at91/pm_slowclock: rename register to named define Nicolas Ferre
2012-02-17 17:49 ` [PATCH 06/18] ARM: at91/pm_slowclock: function slow_clock() accepts parameters Nicolas Ferre
2012-02-17 17:49 ` [PATCH 07/18] ARM: at91: move at91rm9200 sdramc defines to at91rm9200_sdramc.h Nicolas Ferre
2012-02-17 17:50 ` [PATCH 08/18] ARM: at91: make sdram/ddr register base soc independent Nicolas Ferre
2012-02-17 17:50 ` [PATCH 09/18] ARM: at91/pm_slowclock: add runtime detection of memory contoller Nicolas Ferre
2012-02-17 17:50 ` [PATCH 10/18] ARM: at91/PMC: make register base soc independent Nicolas Ferre
2012-02-20 0:27 ` Ryan Mallon
2012-02-17 17:50 ` [PATCH 11/18] ARM: at91/rtc-at91sam9: each SoC can select the RTT device to use Nicolas Ferre
2012-02-20 0:32 ` Ryan Mallon
2012-02-20 1:25 ` Jean-Christophe PLAGNIOL-VILLARD
2012-02-17 17:50 ` [PATCH 12/18] ARM: at91:rtc/rtc-at91sam9: ioremap register bank Nicolas Ferre
2012-02-17 17:50 ` Nicolas Ferre [this message]
2012-02-20 0:43 ` [PATCH 13/18] ARM: at91/rtc-at91sam9: pass the GPBR to use via ressources Ryan Mallon
2012-02-20 1:20 ` Jean-Christophe PLAGNIOL-VILLARD
2012-02-20 7:36 ` Russell King - ARM Linux
2012-02-20 9:16 ` Jean-Christophe PLAGNIOL-VILLARD
2012-02-20 10:04 ` Russell King - ARM Linux
2012-02-20 11:21 ` Nicolas Ferre
2012-02-20 14:45 ` [PATCH] ARM: at91/rtc-at91sam9: rework resources assignment Nicolas Ferre
2012-02-20 15:06 ` Russell King - ARM Linux
2012-02-20 20:04 ` Ryan Mallon
2012-02-17 17:50 ` [PATCH 14/18] ARM: at91: finally drop at91_sys_read/write Nicolas Ferre
2012-02-17 17:50 ` [PATCH 15/18] ARM: at91: merge SRAM Memory banks thanks to mirroring Nicolas Ferre
2012-02-17 17:50 ` [PATCH 16/18] Atmel: move console default platform_device to serial driver Nicolas Ferre
2012-02-18 9:17 ` Hans-Christian Egtvedt
2012-02-19 7:07 ` Jean-Christophe PLAGNIOL-VILLARD
2012-02-17 17:50 ` [PATCH 17/18] ARM: at91/board-dt: drop default console Nicolas Ferre
2012-02-17 17:50 ` [PATCH 18/18] ARM: at91/board-dt: move at91_initialize() to init_irq() Nicolas Ferre
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